Reliable Flight Search
BetaThe insider way to pick a flight: on-time records, the odds each connection is made, legroom and the age of the planes that actually fly the route. Things airline sites and the big booking sites don’t show you. US airlines and airports.
BWI → RDU
Baltimore to Raleigh/Durham: 1,814 nonstop flights a year
On time (12 months)
80%
Cancelled
2.4%
avg delay 13 min
Best time to leave
Before 9 AM
95% on time vs 68% 6 to 9 PM
Most reliable airline
Southwest
78% chance on time
Lowest nonstop fare seen in the next two months: $397 (Southwest 1682 on 2026-10-27). Fares open on our travel partner (Aviasales). Pick the flight number you chose here.
Best trips
11 nonstop · ranked by overall best · published legroom for 11 of 11
Top pick#1 · Nonstop · 1h 20m
8:10 AM → 9:30 AM
85
score
92%
arrive on time
93% on time · 1.7% cancel8:10 AM BWI → 9:30 AM RDU1h 20m
Southwest 1277
Boeing 737 MAX 8 or 737-800 · 1–12 yrs oldLegroom 31–34 in · 15.5–17.8 in wide · Economy (all seating types)Find Southwest 1277 fares Opens this date on Aviasales#2 · Nonstop · 1h 10m
11:50 AM → 1:00 PM
76
score
89%
arrive on time
91% on time · 2.1% cancel11:50 AM BWI → 1:00 PM RDU1h 10m
Southwest 1769 · also flew as 2948
Boeing 737-700 or 737 MAX 8 · 1–23 yrs oldLegroom 31–36 in · 15.5–17.8 in wide · Economy (all seating types)Find Southwest 1769 fares Opens this date on Aviasales#3 · Nonstop · 1h 20m
8:20 AM → 9:40 AM
68
score
89%
arrive on time
90% on time · 1.9% cancel8:20 AM BWI → 9:40 AM RDU1h 20m
Southwest 3616
Boeing 737-700 · 3–23 yrs oldLegroom 31–36 in · 15.5–17.8 in wide · Economy (all seating types)Find Southwest 3616 fares Opens this date on Aviasales#4 · Nonstop · 1h 10m
3:20 PM → 4:30 PM
55
score
76%
arrive on time
78% on time · 2.1% cancel3:20 PM BWI → 4:30 PM RDU1h 10m
Southwest 992
Boeing 737 MAX 8 or 737-800 · 1–13 yrs oldLegroom 31–34 in · 15.5–17.8 in wide · Economy (all seating types)Find Southwest 992 fares Opens this date on Aviasales#5 · Nonstop · 1h 15m
5:15 PM → 6:30 PM
50
score
76%
arrive on time
77% on time · 1.9% cancel5:15 PM BWI → 6:30 PM RDU1h 15m
Southwest 3218 · also flew as 1714
Boeing 737 MAX 8 or 737-700 · 1–22 yrs oldLegroom 31–36 in · 15.5–17.8 in wide · Economy (all seating types)Find Southwest 3218 fares Opens this date on Aviasales#6 · Nonstop · 1h 15m
12:05 PM → 1:20 PM
48
score
80%
arrive on time
82% on time · 2.2% cancel12:05 PM BWI → 1:20 PM RDU1h 15m
Southwest 2356
Boeing 737-700 · 19–23 yrs oldLegroom 31–36 in · 15.5–17 in wide · Economy (all seating types)Find Southwest 2356 fares Opens this date on Aviasales#7 · Nonstop · 1h 15m
5:45 PM → 7:00 PM
40
score
70%
arrive on time
72% on time · 2.2% cancel5:45 PM BWI → 7:00 PM RDU1h 15m
Southwest 3791
Boeing 737-800 or 737 MAX 8 · 1–12 yrs oldLegroom 31–34 in · 15.5–17.8 in wide · Economy (all seating types)Find Southwest 3791 fares Opens this date on Aviasales#8 · Nonstop · 1h 15m
8:00 PM → 9:15 PM
38
score
75%
arrive on time
77% on time · 3.2% cancel8:00 PM BWI → 9:15 PM RDU1h 15m
Southwest 680
Boeing 737-700 · 17–23 yrs oldLegroom 31–36 in · 15.5–17 in wide · Economy (all seating types)Find Southwest 680 fares Opens this date on Aviasales#9 · Nonstop · 1h 15m
9:55 PM → 11:10 PM
33
score
72%
arrive on time
73% on time · 1.8% cancel9:55 PM BWI → 11:10 PM RDU1h 15m
Southwest 1664
Boeing 737-700 · 11–23 yrs oldLegroom 31–36 in · 15.5–17.8 in wide · Economy (all seating types)Find Southwest 1664 fares Opens this date on Aviasales#10 · Nonstop · 1h 20m
7:30 PM → 8:50 PM
32
score
71%
arrive on time
73% on time · 2.0% cancel7:30 PM BWI → 8:50 PM RDU1h 20m
Southwest 2679
Boeing 737-700 · 18–23 yrs oldLegroom 31–36 in · 15.5–17 in wide · Economy (all seating types)Find Southwest 2679 fares Opens this date on Aviasales
Aircraft and ages come from the planes each flight number actually flew in the last 3 months of data (FAA registry build years); airlines can swap planes. Legroom is the seat pitch the airline or a seat-map source publishes for that aircraft and cabin; we never estimate it, and seat maps change, so check the airline’s seat map when you book.
Airlines on this route
Season-adjusted chance of operating and arriving on time.
- Southwest Airlines78%
1,793 flights · 80% on time as flown · 2.3% cancel
On time by departure time
All airlines, scheduled local departure, Jun 2025 to May 2026.
- Before 9 AM95%
448 flights · avg delay 3 min
- 9 AM to noon90%
202 flights · avg delay 5 min
- Noon to 3 PM79%
264 flights · avg delay 13 min
- 3 to 6 PM75%
347 flights · avg delay 18 min
- 6 to 9 PM68%
263 flights · avg delay 17 min
- After 9 PM69%
290 flights · avg delay 21 min
Best day: Wednesday (81%). Worst: Sunday (71%).
Smarter routing
Nearby airports that run more on time
IAD → RDU 82% chance on time
Washington Dulles International Airport to Raleigh-Durham International Airport · 1,334 flights a year · 45 mi from your airports · yours: 78%
Historical odds, not a guarantee. Built from the US DOT Bureau of Transportation Statistics on-time reports (Jun 2025 to May 2026), FAA ground stop and delay program advisories, and 20 years of airport weather observations. Covers US airlines that report to the DOT; schedules are flights operated recently, so confirm times when you book. ATIS Alerts is not affiliated with any airline. Fares are what Aviasales travelers saw in recent searches (USD, one way, 1 adult), not live quotes; the partner site shows the current price. Fare links go to our travel partner and may earn us a commission at no cost to you. Affiliate disclosure